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power transmission line Articles

Using the powerful analysing and decomposing features of wavelet transform, a new fault detection scheme is presented. Further, the same technique has been extended for fault classification and accurate fault location from the relaying point to the fault using a radial basis function neural network (RBFNN) which provides a more efficient approach for training and computation. The relaying scheme ...

Advancement in signal processing techniques and VLSI technology has rapidly substituted conventional electromechanical relays with novel alternatives like digital relays, also termed as computer relays in power system parlance. A computer relay is considered as a digital signal processor which continuously processes the values of line currents and voltages. Hence, the heart of the computer relay ...

Brazilian wind developers may increasingly have to factor transmission links into their operations and maintenance (O&M) plans if grid connection delays persist in the market. Bloomberg earlier this year reported that firms such as CPFL Energia, Brazil’s largest private sector utility, with more than 1.3GW of wind farms in operation or under construction, were stepping forward to bid ...

A fast growth of installed wind power capacity has been experienced in several European countries. In Germany, notably high wind power capacities are planned in the North. If the existing transmission capacities between individual regions become insufficient, the electricity prices will differ considerably and the system operation can become unstable. It is supposed that the extension of ...

Utility preparations for outage response and restoration are an ongoing, consistent problem. Through the year, storms cause disruption to the delivery of power and ultimately cost the utility industry money through lost revenue and system repair. Much of this preparation is focused on weather damage that may occur from hurricanes, thunderstorms, ice storms and various other natural events. Pam ...

Over many decades, the centralized power grid — a one-way flow of electricity, generated by large, remote power plants and distributed over miles of transmission lines to homes and businesses — succeeded in delivering electricity across continents to billions. But in recent years the system’s shortcomings have become increasingly ...

While hydroelectric sources of power account for, and will continue to account for, the majority of Brazil’s electricity consumption requirements, over the course of our forecast period gas-fired power stations will gain importance, as will renewables and nuclear sources of power, once Angra 3 begins operations in 2016. Brazil’s ambitious Belo Monte hydroelectric dam project ...

Editor's Note: The following is a news release authored by Julie Chao and issued by Lawrence Berkeley National Laboratory on April 5, 2017 To meet skyrocketing demand for electricity, African countries may have to triple their energy output by 2030. While hydropower and fossil fuel power plants are favored approaches in some quarters, a new assessment by the Department of Energy’s Lawrence ...

Solar power has come as a blessing to the humanity, not only to provide energy to all but to save humanity from the evils of industrial revolution. The biggest evil of industrial revolution in last two centuries is the concentration and centralization of wealth and resources and also huge political powers in the handful of people. So huge factories, mass production, big industrial and financial ...

The declining reliability of the US electric power system is raising major concerns among both politicians and power engineers in the USA. One of the reasons put forward by the North Electric Reliability Council (NERC) is the detrimental role played by the protection systems during large disturbances, which tend to help the perturbations to propagate through over-tripping of fault free system ...

Economic load dispatch (ELD) and economic emission dispatch (EED) have been applied to obtain generation scheduling of thermal power plants at optimum fuel cost and emissions. Due to limited availability of quality coal, issue of environmental emissions and high prices of coal, installation of renewable energy systems are suggested in power grid. Renewable energy system preferably wind generators ...

Wilga Park Coal Seam Methane Power Station The project is the sole undertaking of the company's wholly owned subsidiary Narrabri Power Limited and comprises:- A coal seam gas gathering and processing system to deliver gas from the Coonarah Field, to the ...

Legendary Texas oilman T. Boone Pickens is half right. We do need to harness this country's wind resources for a homegrown source of electricity, as he has been urging this summer in expensive television ads. And we do need to reduce the $700 billion we may soon be paying annually for imported oil. But part two of Pickens's plan--to move natural gas out of electricity production and use it to ...

The C-train in Calgary is one of the greatest examples of electrified transport in Canada. It is overwhelmingly popular with residents – it boasts an average weekday ridership of 325,000. It has kick started smarter, denser development around its stations. And best of all it and the City of Calgary’s operations are 100 per cent powered by renewable energy. “It's hugely important ...

At the end of 2013, the wind farms installed in more than 85 countries had a combined generating capacity of 318,000 megawatts, which would be enough to meet the residential electricity needs of the European Union’s 506 million people. New data from the Global Wind Energy Council show that wind developers built 35,000 megawatts of new generating capacity worldwide in 2013. This was down ...

The power frequency electric and magnetic field (EMF) effects are associated with the transmission and distribution lines of electric utility systems, and also with work environments, office machines, illumination sources, home appliances, computers, etc. Most of these facilities are considered indispensable components of everyday life in population centres, office complexes and industrialised ...

The National Renewable Energy Laboratory (NREL) has released a study entitled "Modeling the Integrated Expansion of the Canadian and U.S. Power Sectors with the Regional Energy Deployment System (ReEDS)”. Funded by OE, this study documents a development effort that created a robust representation of the combined capacity expansion of the U.S. and Canadian electric sectors in the NREL ...

Even amid policy uncertainty in major wind power markets, wind developers still managed to set a new record for installations in 2012, with 44,000 megawatts of new wind capacity worldwide. With total capacity exceeding 280,000 megawatts, wind farms generate carbon-free electricity in more than 80 countries, 24 of which have at least 1,000 megawatts. At the European level of consumption, the ...

The optimal location of Flexible AC Transmission Systems (FACTS) controllers is important due to their high cost. When a FACTS controller uses some converters, its cost becomes very high. A multi-converter unified power flow controller, also known as Generalised Unified Power Flow Controller (GUPFC) can effectively control the power system parameters such as bus voltage and real and reactive ...

Armtec is proud to have built the first Durisol transformer thermal barrier in Western Canada and continue the tradition of offering innovative solutions at the best value to our customers. In 2011, Yukon Energy built a new172km long, 138kV transmission line from Carmacks to Stewart Crossing in the central Yukon Territory with the goal of connecting their northern and southern grids. Having one ...